cos (60^(@) + A) + cos (60^(@) -A) का मा...

`cos (60^(@) + A) + cos (60^(@) -A)` का मान बराबर है

A

`cos 60^(@) cos A`

B

`sin 60^(@) sin A`

C

`cos A`

D

`sin A`

लिखित उत्तर

Verified by Experts

The correct Answer is:

C

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